205125275 has 6 divisors (see below), whose sum is σ = 254355372. Its totient is φ = 164100200.

The previous prime is 205125269. The next prime is 205125301. The reversal of 205125275 is 572521502.

It is not a de Polignac number, because 205125275 - 2⁴ = 205125259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4102481 + ... + 4102530.

It is an arithmetic number, because the mean of its divisors is an integer number (42392562).

Almost surely, 2^205125275 is an apocalyptic number.

205125275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

205125275 is a deficient number, since it is larger than the sum of its proper divisors (49230097).

205125275 is an equidigital number, since it uses as much as digits as its factorization.

205125275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8205021 (or 8205016 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 205125275 is about 14322.1951878893. The cubic root of 205125275 is about 589.7569380871.

Adding to 205125275 its reverse (572521502), we get a palindrome (777646777).

The spelling of 205125275 in words is "two hundred five million, one hundred twenty-five thousand, two hundred seventy-five".